I honestly didn't care for that, thats Sanji towards an enemy he can't hit but try to convince with words when he sees it's possible, like he did to Viola and Pudding, but this time he is trapped and getting pummeled like never before.
The fact that Black Maria's attacks ended up meaning nothing to Sanji at the moment proves that she wasn't even an enemy to waste Sanji's time, he was more worried about getting out of there and being useful, like helping the Scabbards or Momonosuke.
My problem is this took too many chapters